Stegoelmis

Fernandes, André S., Passos, Maria Inês S. & Hamada, Neusa, 2011, Stegoelmis Hinton, 1939 (Coleoptera: Elmidae: Elminae) in Brazil: two new species and a key to the Brazilian species, Zootaxa 2921, pp. 56-64 : 64

Key to males of the Brazilian species of Stegoelmis ( Elmidae : Elminae ).

1 Elytral apices rounded and not dehiscent ( Fig. 2 )............................................................. 2

- Elytral apices not rounded and dehiscent ( Fig. 1 )............................................................. 3

2 Hypomeron with punctures about as dense as those of pronotal disc, ventrites I and II with entire surface densely and coarsely punctuate................................................................................... S. verrucata

- Hypomeron with punctures denser and coarser than those of pronotal disc, only ventrite I with surface of apical 2/3 densely and coarsely punctuate ( Fig. 3 )...................................................... S. figueiredoensis sp. nov.

3 Metatibiae with long, distinct, apicomedial cleaning fringe of dense, golden, hairlike setae on apical 1/4 ( Fig. 1 )................................................................................................ S. shepardi sp. nov.

- Metatibiae with very short, indistinct, apicomedial cleaning fringe of sparse, golden, hairlike setae ( Fig. 2 )............. 4

4 Distinct, deep and long longitudinal pronotal impression................................................... S. ica

- Indistinct, shallow and short longitudinal pronotal impression......................................... S. stictoides

Figures

FIGURE 1. Map showing the distribution of the Brazilian species of Stegoelmis.

FIGURES 2 – 4. Stegoelmis shepardi sp. nov.; 2) Dorsal habitus. Stegoelmis figueiredoensis sp. nov.; 3) Dorsal habitus. 4) Ventral habitus. Scale bars: 1.0 mm.